Single bus architecture supporting subsystems of various criticality levels
First Claim
1. An architecture for use with interconnecting a plurality of avionics subsystems of an overall system, each subsystem operating on information useful in the overall system which information may be of various levels of importance to the overall system, each subsystem having a bus bridge operable to conduct input and output information to and from its subsystem, comprising:
- a single shared resource bus connected to each of the bus bridges; and
an error detect wrapper connected to those bus bridges associated with subsystems operating on information having at least a first predetermined level of importance to the overall system, said error detect wrapper encoding information being sent from a subsystem to the shared resource bus and checking the coding of information received from the shared resource bus to detect if there has been any transmission error between a sending subsystem and a receiving subsystem.
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Abstract
Communications systems architecture using a single shared resource bus to interconnect a plurality of subsystems each handling information having a first predetermined importance level and an error detect wrapper for encoding information to and from each such subsystem to detect errors in transmission along the shared resource bus. A heartbeat monitor is also provided for use in those subsystems handling information having a second predetermined level of importance to disable the subsystem if an error occurs within the subsystem.
37 Citations
8 Claims
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1. An architecture for use with interconnecting a plurality of avionics subsystems of an overall system, each subsystem operating on information useful in the overall system which information may be of various levels of importance to the overall system, each subsystem having a bus bridge operable to conduct input and output information to and from its subsystem, comprising:
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a single shared resource bus connected to each of the bus bridges; and an error detect wrapper connected to those bus bridges associated with subsystems operating on information having at least a first predetermined level of importance to the overall system, said error detect wrapper encoding information being sent from a subsystem to the shared resource bus and checking the coding of information received from the shared resource bus to detect if there has been any transmission error between a sending subsystem and a receiving subsystem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification